package com.awakening.o2o.config.web;

import com.awakening.o2o.interceptor.shopadmin.ShopLoginInterceptor;
import com.awakening.o2o.interceptor.shopadmin.ShopPermissionInterceptor;
import com.google.code.kaptcha.servlet.KaptchaServlet;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.multipart.commons.CommonsMultipartResolver;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.*;
import org.springframework.web.servlet.view.InternalResourceViewResolver;

import javax.servlet.ServletException;

/**
 * 开启Mvc，自动注入spring容器，webMvcConfigurerAdpater：配置视图解析器
 * 当一个类实现了这个接口（ApplicationContextAware）之后，这个类就可以方便获得ApplicationContext中所有的bean
 * @EnableWebMvc 等价于<mvc:annotation-driven/>
 * @Author:AwakeningCode
 * @Date: Created in 12:45 2018\2\3 0003
 */
@Configuration
@EnableWebMvc
public class MvcConfiguration extends WebMvcConfigurerAdapter implements ApplicationContextAware{
    //spring容器
    private ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;
    }

    /**
     * 静态资源配置
     * @param registry
     */
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        //registry.addResourceHandler("/resources/**").addResourceLocations("classpath:/resources/");——不需要的
        registry.addResourceHandler("/upload/**").addResourceLocations("file:D:/projectdev/image/");
        //registry.addResourceHandler("/upload/**").addResourceLocations("file:/Users/baidu/work/image");
    }

    /**
     * 定义默认的请求处理器
     * @param configurer
     */
    @Override
    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
        configurer.enable();
    }

    /**
     * 创建viewResolver
     * @return
     */
    @Bean(name = "viewResolver")
    public ViewResolver createViewResolver(){
        InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
        //设置spring容器
        viewResolver.setApplicationContext(this.applicationContext);
        //取消缓存
        viewResolver.setCache(false);
        //设置解析的前缀
        viewResolver.setPrefix("/WEB-INF/html/");
        //设置视图解析的后缀
        viewResolver.setSuffix(".html");
        return viewResolver;
    }

    /**
     * 文件上传解析器
     * @return
     */
    @Bean(name = "multipartResolver")
    public CommonsMultipartResolver createMultipartResolver(){
        CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver();
        multipartResolver.setDefaultEncoding("utf-8");
        //1024 * 1024 * 20 = 20M
        multipartResolver.setMaxUploadSize(20971520);
        multipartResolver.setMaxInMemorySize(20971520);
        return multipartResolver;
    }

    @Value("${kaptcha.border}")
    private String border;
    @Value("${kaptcha.textproducer.font.color}")
    private String fcolor;
    @Value("${kaptcha.image.width}")
    private String width;
    @Value("${kaptcha.textproducer.char.string}")
    private String cString;
    @Value("${kaptcha.image.height}")
    private String height;
    @Value("${kaptcha.textproducer.font.size}")
    private String fsize;
    @Value("${kaptcha.noise.color}")
    private String nColor;
    @Value("${kaptcha.textproducer.char.length}")
    private String clength;
    @Value("${kaptcha.textproducer.font.names}")
    private String fnames;

    /**
     * 由于web.xml不生效了，需要在这里配置Kaptcha验证码Servlet
     * @return
     * @throws ServletException
     */
    @Bean
    public ServletRegistrationBean servletRegistrationBean() throws ServletException{
        ServletRegistrationBean servlet = new ServletRegistrationBean(new KaptchaServlet(),"/Kaptcha");
        servlet.addInitParameter("kaptcha.border",border);//无边框
        servlet.addInitParameter("kaptcha.textproducer.font.color",fcolor);//字体颜色
        servlet.addInitParameter("kaptcha.image.width",width);//图片宽度
        servlet.addInitParameter("kaptcha.textproducer.char.string",cString);//使用哪些字符
        servlet.addInitParameter("kaptcha.image.height",height);//图片高度
        servlet.addInitParameter("kaptcha.textproducer.font.size",fsize);//字体大小
        servlet.addInitParameter("kaptcha.noise.color",nColor);//干扰线的颜色
        servlet.addInitParameter("kaptcha.textproducer.char.length",clength);//字符个数
        servlet.addInitParameter("kaptcha.textproducer.font.names",fnames);//字体
        return servlet;
    }

    /**
     * 添加拦截器配置
     * @param registry
     */
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        String interceptPath = "/shopadmin/**";
        //注册拦截器
        InterceptorRegistration loginIR = registry.addInterceptor(new ShopLoginInterceptor());
        //配置拦截的路径
        loginIR.addPathPatterns(interceptPath);
        //还可以注册其他的拦截器
        InterceptorRegistration permissionIR = registry.addInterceptor(new ShopPermissionInterceptor());
        //配置拦截的路径
        permissionIR.addPathPatterns(interceptPath);
        //配置不拦截的路径
        /** shoplist page */
        permissionIR.excludePathPatterns("/shopadmin/shoplist");
        permissionIR.excludePathPatterns("/shopadmin/getshoplist");
        /** shopregister page */
        permissionIR.excludePathPatterns("/shopadmin/getshopinitinfo");
        permissionIR.excludePathPatterns("/shopadmin/registershop");
        permissionIR.excludePathPatterns("/shopadmin/shopoperation");
        /** shopmanage page */
        permissionIR.excludePathPatterns("/shopadmin/shopmanagement");
        permissionIR.excludePathPatterns("/shopadmin/getshopmanagementinfo");
    }
}
